Physics – Optics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001sf2a.conf..473h&link_type=abstract
Abstracts from SF2A-2001: Semaine de l'Astrophysique Francaise, meeting held in Lyon, France, May 28-June 1st, 2001, Eds.: F. Co
Physics
Optics
Scientific paper
Integrated optics components are investigated at LAOG since 1996 in the framework of stellar single-mode interferometry. Using this technology, we can think of complex combination schemes for the present large ground based telescope arrays. In this perspective these components present a good alternative to classical optics thanks to their compactness and stability. After a brief review of integrated optics technologies, we present the laboratory results obtained on three telescope beam combiners dedicated to closure phase measurements. Their optical validation in terms of transmission, interferometric behavior, chromaticity and dispersion has shown their potentiality for stellar interferometry, and has opened perspectives for the simultaneous combination of large number of telescopes. First fringes with stellar light were obtained with a two telescope beam combiners on the IOTA interferometer (Arizona, USA) on november 2000. These first astronomical results are reported. The further phases of tests as well as perspectives for astronomical instrumentation are finally presented.
Berger Jean Philippe
Haguenauer Pierre
Kern Oliver
Laurent Eric
Malbet Fabian
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